Linear Functions Model

What is the slope?

• Positive

• Negative

• Zero

• Undefined

Write the equation of the line through given that f(-6) = -19 and f(2) = 5. Show your work

A restaurant sells pizza for the prices in the data table.  Calculate the linear regression equation of the data.

Write yes/no in the table to show whether each function on the interval -1 ≤ x ≤ 2 has a minimum at x = -1, or decreases.

• yes/yes

• yes/no

• no/yes

• no/no

A line passes through a point as shown in the graph.

Part A. Using the coordinates of the point shown in the graph, what is the equation of the line in point-slope form?

A line passes through a point as shown in the graph.

Part B. What is the equation of the line in slope-intercept form?

Evaluate the function f (x) = 3x + 5 at f(3).

The table shows the height of a child each year on the child’s birthday.

For the first five years, which linear function, f(x), could model the child’s height as a function of their age, x?

• f(x) = 10x

• f(x) = 10x + 70

• f(x) = 10x + 80

• f(x) = 10x + 120

Write yes/no in the table to show whether each function on the interval -1 ≤ x ≤ 2 has a minimum at x = -1, or decreases.

• yes/yes

• yes/no

• no/yes

• no/no